¡¡¡¡1. Range of application¡¡¡¡ Pu-50 double-component type polyurethane glue has been extensively used as an adhesive between aluminum honeycomb and aluminum plate, between EPS FWB or XPS, which included in light building materials or wall insulation board, and calcium silicate board or steel plate or aluminum plate or processed stone or grade of outer wall.¡¡¡¡ 2. Physical & Chemical Properties¡¡¡¡ Pu-50 type polyurethane glue, as a type of solvent-free, non-benzene and nonformaldehyde glue, is superior in waterproof, cold resistance and weatherability with its fine thixotropy and high cohesional strength. It also characterizes its non-foam and solidifying under normal temperature.